US3533989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphite antioxidants in polyolefins
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1969-04-02
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Granted: 1970-10-13
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Expires: 1989-04-02
Abstract
No abstract record available.
Inventors
- 👤 Lyle D Wescott Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:35
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3069369A
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US3082187A
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US3167526A
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US3115465A
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US3382199A
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US3305520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |